TLY 27 MICROPROCESSOR-BASED DIGITAL ELECTRONIC FREEZER CONTROLLER. OPERATING INSTRUCTIONS Vr. 01 (ENG) - cod.: ISTR TECNOLOGIC S.p.A.

TLY 27 MICROPROCESSOR-BASED DIGITAL ELECTRIC FREEZER CTROLLER FOREWORD OPERATING INSTRUCTIS Vr. 01 (ENG) - cod.: ISTR 06656 TECNOLOGIC S.p.A. VIA INDIPENDENZA 56 27029 VIGEVANO (PV) ITALY TEL.: +39 0381 69871 FAX: +39 0381 698730 internet : http:\\www.tecnologic.it e-mail: info@tecnologic.it This manual contains the information necessary for the product to be installed correctly and also instructions for its maintenance and use; we therefore recommend that the utmost attention is paid to the following instructions and to save it. This document is the exclusive property of TECNOLOGIC S.p.A. which forbids any reproduction and divulgation, even in part, of the document, unless expressly authorized. TECNOLOGIC S.p.A. reserves the right to make any formal or functional changes at any moment and without any notice. Whenever a failure or a malfunction of the device may cause dangerous situations for persons, thing or animals, please remember that the plant has to be equipped with additional devices which will guarantee safety. Tecnologic S.p.A. and its legal representatives do not assume any responsibility for any damage to people, things or animals deriving from violation, wrong or improper use or in any case not in compliance with the instrument s features. INDEX 1 1.1 1.2 2 2.1 2.2 2.3 2.4 2.5 2.6 3 3.1 3.2 3.3 3.4 4 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.9.1 4.9.2 4.9.3 4.9.4 4.10 4.11 4.12 4.13 4.13.1 4.13.2 4.13.3 4.13.4 5 6 6.1 6.2 6.3 7 7.1 7.2 7.3 7.4 7.5 INSTRUMENT DESCRIPTI GENERAL DESCRIPTI FRT PANEL DESCRIPTI PROGRAMMING PROGRAMMING OF SET POINT PARAMETERS PROGRAMMING PARAMETER PROTECTI USING THE PASSWORD PARAMETERS PROGRAMMING LEVEL ACTIVE SET POINT SELECTI / STAND-BY FUNCTI INFORMATI INSTALLATI AND USE PERMITTED USE MECHANICAL MOUNTING ELECTRICAL CNECTIS ELECTRICAL WIRING DIAGRAM FUNCTIS MEASURING AND VISUALIZATI OUTPUTS CFIGURATI TEMPERATURE CTROL CTINUOUS CYCLE FUNCTI COMPRESSOR PROTECTI FUNCTI AND DELAY AT POWER- DEFROST CTROL MANUAL DEFROST EVAPORATOR FANS CTROL ALARM FUNCTIS TEMPERATURE ALARMS EXTERNAL ALARM OPEN DOOR ALARM ALARM MEMORY DIGITAL INPUT AUXILIARY OUTPUT FUNCTI OF KEYS U AND DOWN/AUX ACCESSORIES PARAMETERS CFIGURATI BY KEY0 PARAMETERS CFIGURATI BY KEY02 TVR Y REMOTE DISPLAY RS 485 SERIAL INTERFACE BY TLCNV PROGRAMMABLE PARAMETERS TABLE PROBLEMS, MAINTENANCE AND GUARANTEE SIGNALLING CLEANING GUARANTEE AND REPAIRS TECHNICAL DATA ELECTRICAL DATA MECHANICAL DATA MECHANICAL DIMENSIS, PANEL CUT-OUT AND MOUNTING FUNCTIAL DATA INSTRUMENT ORDERING CODE 1 - INSTRUMENT DESCRIPTI 1.1 - GENERAL DESCRIPTI The model TLY 27 is a digital controller with microprocessor that is typically used in cooling applications that have temperature control with / regulation and defrosting control with interval time by means of stopping compressor, electrical heating or hot gas/reverse cycle. The instrument has 2 relay outputs, one input for PTC or NTC temperature probes and a second input that can all be a digital or for PTC or NTC probes. The 2 outputs can be used for controlling the compressor or the temperature control device (OUT) and the defrosting device (DEF),or, alternatively, the evaporation fan (FAN), an auxiliary device (AUX) or an alarm (AL). The two inputs for the PTC and NTC temperature probes (which can be selected by parameter) can be used to measure the cell temperature () and the evaporator temperature (Pr2) while the digital input (DIG), alternative to the Pr2 probe, can be programmed to carry out various functions such as defrosting commands, selecting a different set of temperature regulations, TECNOLOGIC - TLY27 - OPERATING INSTRUCTIS - Vr. 01 - ISTR 06656 - PAG. 1

external alarm signals, activating a continuous cycle, and activating an auxiliary output etc. The instrument is equipped with 4 programme keys, a 4-digit display and 9 LED signals, in addition to an internal buzzer that is the sound system for alarms. Other important characteristics of the instrument are: programme parameters protection using personalised password, switching on and (stand-by) of the instrument using the front keys or the digital input, configuration of parameters via the KEY 01 device, memorising of two sets of temperature regulations that can be switched and the possibility of power supply in the range 100... 240 VAC. 1.2 - FRT PANEL DESCRIPTI 9 AL Out Def TLY 27 - OK + Fan Aux 5 6 11 12 13 7 8 1 - Key P : Used for setting the Set point and for programming the function parameters 2 - Key DOWN/Aux : Used for decreasing the values to be set and for selecting the parameters. It can also be programmed via the parameter Fbd to carry out other functions such as activating the Aux output, starting up the continuous cycle, selecting the active set point or turning on and (stand-by) the device (see par. 4.12). 3 - Key UP/DEFROST : Used for increasing the value to be set, for selecting the parameters and for activating manual defrosting. 4 - Key U : Used for visualising the temperatures taken by the cell probes and evaporator ( and Pr2). It can also be programmed via the parameter USrb to carry out other functions, just like the key DOWN/AUX (see par. 4.12). 5 - Led OUT : Indicates the compressor output status (or the temperature control device) on (on), () or inhibited (flashing) 6 - Led DEF : Indicates defrosting in progress (on) or dripping (flashing). 7 - Led FAN : Indicates fan output status on (on), () or delayed after defrosting (flashing) 8 - Led AUX : Indicates AUX output status on (on), () or inhibited (flashing) 9 - Led AL : Indicates the alarm status (on), () and silenced or memorized (flashing) 10 - Led SET : Indicates the input in programming mode and the programming level of the parameters. It also serves to indicate the Stand-by status. 11 - Led - : Indicates that a low temperature alarm is in progress (lit) or that a low temperature alarm has been memorised (flashing). 12 - Led OK : Indicates that no alarms are in progress 13 - Led + : Indicates that a high temperature alarm is in progress (lit) or that a high temperature alarm has been memorised (flashing). 2 - PROGRAMMING 2.1 - PROGRAMMING OF THE SET POINT Press the key P then release it and the display will show SP 1 (or SP 2 if the second set is active at that time) alternating with the set value (see selection of the active set point). To change it press the UP key to increase the value or DOWN to decrease it. These keys increase or decrease the value one digit at a time, but if the button is pressed for more than one second the value increase or decreases rapidly, and after two seconds pressed, the speed increases even more to all the desired valued to be reached rapidly. Exiting the Set mode is achieved by pressing the P key or automatically if no key is pressed for 15 seconds. After that time the display returns to the normal function mode. Aux 4 3 2 1 10 2.2 - PARAMETERS PROGRAMMING To access the instrument s function parameters, press the key P and keep it pressed for about 5 seconds, after which the SET led will light up, the display will visualised the code that identifies the first group of parameters ( ] SP ) and the group of parameters that are to be edited are selected by pressing the UP and DOWN keys. Once the group of parameters has been selected, press the P and the code that identifies the first parameter in the selected group will be visualised. Again using the UP and DOWN keys, the desired parameter can be selected and pressing the P key, the display will alternately show the parameter code and its setting that can be changed with the UP and DOWN keys. Once the desired value has been set, press the key P again: the new value will be memorised and the display will show only the abbreviation of the selected parameter. Pressing the UP and DOWN keys, it is possible to select another parameter (if present) and change it as described. To return to select another group of parameters, keep the UP or the DOWN key pressed for about 1 second, after which the display will return to showing the code of the parameter group. Release the pressed key and using the UP and DOWN keys it will be possible to select another group (if present). To exit the programming mode, do not press any key for about 20 seconds, or keep the UP or DOWN key pressed until it exits the programming mode. Hold for 5 sec. Hold for 2 sec. Hold for 2 sec. Hold Longer 2.3 - PARAMETER PROTECTI USING THE PASSWORD The instrument has a parameter protection function using a password that can be personalised, through the PASS parameter in the ] PAn set. If one wishes to have this protection, set the password number desired in the parameter PASS. When the protection is working, press the P key to access the parameters and keep it press for about 5 seconds, after which the LED SET will flash and the display will show 0. At this point, using the UP and DOWN keys, set the password number programmed and press the key "P". If the password is correct, the display will visualise the code that identifies the first group of parameters( ] SP ) and it will be possible to programme the instrument in the same ways described in the previous section. Protection using a password can be disabled by setting the parameter PASS =. 2.4 - PARAMETERS PROGRAMMING LEVELS The instrument has two parameter programming levels. The first level ( visible parameters) is accessed according to the procedure described above (with or without password request) while the second level ( hidden password) can be accessed according to the following procedure. Remove the power supply to the instrument, press the key P and return power to the instrument, keeping the key pressed. After about 5 sec. the SET led will light up, the display will show the code that identifies the first group of parameters( ] SP ) and it will be possible to set the parameters of the instrument using the same programming procedure described previously. Once the parameter has been selected and the SET is on, it means that the parameter can be programmed even on the first level ("visible ). If the LED is it means that the parameter can only be TECNOLOGIC - TLY27 - OPERATING INSTRUCTIS - Vr. 01 - ISTR 06656 - PAG. 2

programmed on this level (i.e. hidden ). To change the visibility of the parameter, press the key U: the led SET will change status, indicating the accessibility level of the parameter (on = parameter visible ; = parameter hidden ). The access procedure for hidden parameters allows the PASS parameter to be checked and changed, and is useful therefore if the password set has been forgotten. 2.5 - ACTIVE SET POINT SELECTI The instrument allows up to 2 different regulation Set points to be pre-set ( SP 1 and SP 2 ) and then to choose which one to make active. This function can be used if it is necessary to switch two different function temperatures (e.g. day and night or positive and negative etc). The active set point can be selected: - Using the parameter SPAt - using the key U if the parameter "USrb" = 3. - Using the key DOWN/AUX if the parameter "Fbd" = 3. - Using the digital input if the parameter. dif = 8 (see par. 4.10 and 4.12) The Set points "SP1" and "SP2" can be set with a value between the programmed value in parameter. SPLL and the programmed value in parameter SPHL. Note: in the examples that follow, the Set point is generally indicated as "SP", how when operating the instrument will work according to the Set point selected as active. 2.6 - / STAND-BY FUNCTI The instrument, once powered up, can assume 2 different conditions: - : means that the controller uses the control functions. - STAND-BY : means that the controller does not use any control function and the display is turned except for the green SET led. If there is no power, and then power returns, the system always sets itself in the condition it was in before the black-out. The /Stand-by function can be selected: - Using the key U if the parameter "USrb" = 4. - Using the key DOWN/AUX if the parameter "Fbd" = 4. - using the digital input if the parameter dif = 10 (see par. 4.10 and 4.12) 3 - INFORMATI INSTALLATI AND USE 3.1 - PERMITTED USE The instrument has been projected and manufactured as a measuring and control device to be used according to EN61010-1 for the altitudes operation until 2000 ms. The use of the instrument for applications not expressly permitted by the above mentioned rule must adopt all the necessary protective measures. The instrument CANNOT be used in dangerous environments (flammable or explosive) without adequate protection. The installer must ensure that EMC rules are respected, also after the instrument installation, if necessary using proper filters. Whenever a failure or a malfunction of the device may cause dangerous situations for persons, thing or animals, please remember that the plant has to be equipped with additional devices which will guarantee safety. 3.2 - MECHANICAL MOUNTING The instrument, in case 33 x 75 mm, is designed for flush-in panel mounting. Make a hole 29 x 71 mm and insert the instrument, fixing it with the provided special bracket. We recommend that the gasket is mounted in order to obtain the front protection degree as declared. Avoid placing the instrument in environments with very high humidity levels or dirt that may create condensation or introduction of conductive substances into the instrument. Ensure adequate ventilation to the instrument and avoid installation in containers that house devices which may overheat or which may cause the instrument to function at a higher temperature than the one permitted and declared. Connect the instrument as far away as possible from sources of electromagnetic disturbances such as motors, power relays, relays, solenoid valves, etc. 3.3 - ELECTRICAL CNECTI Carry out the electrical wiring by connecting only one wire to each terminal, according to the following diagram, checking that the power supply is the same as that indicated on the instrument and that the load current absorption is no higher than the maximum electricity current permitted. As the instrument is built-in equipment with permanent connection inside housing, it is not equipped with either switches or internal devices to protect against overload of current: the installation will include an overload protection and a two-phase circuit-breaker, placed as near as possible to the instrument, and located in a position that can easily be reached by the user and marked as instrument disconnecting device which interrupts the power supply to the equipment. It is also recommended that the supply of all the electrical circuits connected to the instrument must be protect properly, using devices (ex. fuses) proportionate to the circulating currents. It is strongly recommended that cables with proper insulation, according to the working voltages and temperatures, be used. Furthermore, the input cable of the probe has to be kept separate from line voltage wiring. If the input cable of the probe is screened, it has to be connected to the ground with only one side. Whether the instrument is 12 V version it s recommended to use an external transformer TCTR, or with equivalent features, and to use only one transformer for each instrument because there is no insulation between supply and input. We recommend that a check should be made that the parameters are those desired and that the application functions correctly before connecting the outputs to the actuators so as to avoid malfunctioning that may cause irregularities in the plant that could cause damage to people, things or animals. 3.4 - ELECTRICAL WIRING DIAGRAM TLY 27 1 2 SUPPLY 4 - FUNCTIS SPST-NO 16A-AC1 NO SPDT 16A-AC1 NO NC 3 4 5 6 7 OUT 1 C C SPDT 5A-AC1 C NO 8 9 OUT 2 NC 10 INPUTS 11 12 INTERNAL BUZZER 4.1 - MEASURING AND VISUALIZATI All the parameters concerning measuring are contained in the group ] InP. Via the parameter SEnS it is possible to select the type of probes that one wishes to use and which can be: thermistores PTC KTY81-121 (Ptc) or NTC 103AT-2 (ntc). Once the type of probe used has been selected, through the parameter Unit, it is possible to select the temperature unit of measurement ( C or F) and, through the parameter dp, the resolution of the desired measurement (=1 ; On =0,1 ). The instrument allows the measuring to be calibrated, that can be used for re-calibrating the instrument according to application needs, through the parameters OFS1 (for the probe ) and OFS2 (for the probe Pr2). If probe Pr2 (evaporator) is not used, set the parameter Pr 2 =. TECNOLOGIC - TLY27 - OPERATING INSTRUCTIS - Vr. 01 - ISTR 06656 - PAG. 3 DIG Pr2

Using the parameter FiL, it is possible to set the time constant for the software filter for measuring the input values to be able to reduce the sensitivity to measurement disturbances (increasing the time). Through the paragraph disp, it is possible to fix the normal visualisation on the display that can be the measurement of the cell probe (Pr 1), the measurement of the evaporator probe (Pr 2), the set point of active regulation (SP) or it can have the numerical display switched (). Regardless of what is set in the parameter disp, it is possible to visualise all the variables in rotation by pressing the key U, the display will alternately show the code that identifies the variable (Pr 1, Pr 2) and its value. The exit of this visualisation mode occurs automatically 15 seconds after the last pressing on the key U. Please remember that visualisation of the probe can be changed by the display block in defrosting function too, by using the parameter dlo (see par. 4.6). 4.2 - OUTPUTS CFIGURATI The instrument outputs can be configured in the parameters group ] Out where the relative parameters O1F, O2F are found and also the parameter buf that allows configuration of the internal buzzer (if present). The outputs can be configured for the following functions = Out - to control the compressor or however, the temperature control device = def - to control the defrosting device = FAn - to control the fans = AuS - to control the auxiliary device (see par. 4.11) = ALt - to control a silenceable alarm device through a contact that is normally open, and then closed when the alarm sounds = AL - to control an alarm that cannot be silenced through a contact that is normally open and closed when the alarm sounds. = ALL - to control an alarm with a memory function through a contact that is normally open and closed when the alarm sounds. = -ALt - to control a silenceable alarm device through a contact that is normally closed, and then open when the alarm sounds. = -AL - control an alarm that cannot be silenced through a contact that is normally closed and open when the alarm sounds. = -ALL - to control an alarm with a memory function through a contact that is normally closed and open when the alarm sounds (see alarm memory). = - Disabled output 4.3 - TEMPERATURE CTROL All the parameters concerning temperature regulation are contained in the group ] reg. The regulation of the instrument is / and acts on the output configured as Out depending on the measuring of probe, of the active Set Point SP (1 or 2), the intervention differential HSEt and the function mode Func. Depending on the function mode programmed on the parameter Func the differential is automatically considered by the regulator with positive values for a Refrigeration control ( Func =CooL) or with negative values for a heating control ( Func =HEAt). Temp. SP Out HSEt time Temp. SP Out CooL HEAt In the event of cell probe error (), it is possible to set the instrument so that that the output Out continues to work in cycles according to the times programmed in the parameter tone (activation time) and tofe (deactivation time). If an error occurs on the probe the instrument activates the output for the time tone, then deactivates it for the time tofe HSEt time and so on whilst the error remains. Programming tone = lthe output in probe error condition will remain switched. Programming instead tone to any value and tofe = the output in probe error condition will remain switched on. Remember that the temperature regulation function can be conditioned by the Continuous Cycle, Compressor Protection, Minimum compressor function time, Delay compressor start up after defrosting and inhibition of compressor close to defrosting functions described below. 4.4 - CTINUOUS CYCLE FUNCTI The instrument has a continuous cycle function by which it is possible to maintain the configured output configured as out always active for the time set in parameter tcc (in the group ] reg ) regardless of the temperature control command. The function can be used for example, when rapid lowering of the product temperature is required after the refrigerator loading phase. During the continuous cycle, the defrosting is inhibited and the temperature alarms are disabled during the entire cycle and also later for the time set in parameter dalc (see par. 4.9). Starting up a continuous cycle can only be done by a manual command using the U or DOWN/AUX ( UrSb or Fbd = 2) keys or via the digital input ( dif =3) if suitably programmed (see par. 4.10 and 4.12). The continuous cycle in progress is shown on the display with the indication CC and can be stopped by a further action on the key or digital input (as for activation). The continuous cycle function cannot be activated during defrosting and with "tcc" =. 4.5 - COMPRESSOR PROTECTI FUNCTI AND DELAY AT POWER- All the parameters concerning the compressor protection functions and the delay at power on are contained in the group ] PrC. The function Compressor Protection carried out by the machine aims to avoid close start ups of the compressor controlled by the instrument in cooling applications. This function foresees a time control on the switching on of the Out output associated with the temperature regulation request. The protection consists of preventing the output being switched on during the time set in the parameter PtC and counted depending on what has been programmed in the parameter PSC, and therefore that any activation occurs only after the PtC time has finished. If during the power on delay phase, the regulator request should disappear, due to an inhibition caused by the compressor protection function, the foreseen start up of the output is naturally cancelled. Using the parameter "PSC", it is possible to set the type of compressor protection and therefore from when the inhibition time PtC must start. The parameter PSC can be set as: = 1 : Power on delay Temp. SP Out PtC = 2 : Delay after power Temp. SP Out "PSC" = 1 PtC "PSC" = 2 PtC PtC PtC PtC TECNOLOGIC - TLY27 - OPERATING INSTRUCTIS - Vr. 01 - ISTR 06656 - PAG. 4 HSEt tim e HSEt tim e

= 3 : Delay between power on phases. Temp. SP Out PtC "PSC " = 3 PtC PtC HSEt tim e The function is disabled by programming PtC = 0. Through the parameter LCt it is also possible to set the minimum activation time of the output to avoid switching on of the compressor that is too short. During the power on delay phases of the OUT output by inhibiting the function Compressor Protection or delay of power caused by the minimum function time LCt, the led OUT flashes. It is also possible to prevent activation of all the outputs after the instrument is turned on, for the time set in the parameter od. The function is disabled by od =. During the power on delay phase, the display shows the indication od, alternating with the normal programmed visualisation. 4.6 - DEFROST CTROL All the parameters concerning the defrosting control that acts on the outputs configured as Out and def, are container in the group ] def. The type of defrosting that the instrument must carry out is set by the parameter dtyp that can be programmed: = EL - WITH ELECTRICAL HEATING or BY STOPPING COMPRESSOR (during defrosting, the output Out is deactivated while the output def is enabled) = in - WITH HOT GAS or INVERSI OF CYCLE (during defrosting the outputs Out and def are enabled) The automatic defrosting can take place at intervals. Defrosting at intervals is possible by setting the time that runs between the two next automatic defrostings in the parameter dint. Counting this interval is set through the parameter "dct" that can be programmed: = rt - counts the total function time (instrument on) = ct - counts only the compressor function time (output OUT switched on) = cs - the instrument carries out a defrosting cycle at each compressor stop (i.e. at each deactivation of the output OUT). If this option is used, set dint =. The automatic defrosting cycle can be at time intervals or, if an evaporator probe is used (Pr2), when a temperature is reached. If the evaporator probe is not used (par. Pr 2 = ) the duration cycle is set by the parameter defe. If instead the evaporator probe is used (parameter Pr 2 = on) the defrosting takes place when the temperature measured by the probe exceeds the temperature set in the parameter tedf. If this temperature is not reached in the time set in the parameter defe, defrosting is interrupted. In order to avoid pointless defrosting the parameter. tsdf is foreseen that sets the enablement temperature for defrosting If the temperature measured by the probe is higher than the one set in the parameter tsdf and in the parameter "tefe" the defrosting is inhibited. Temp. Pr2 tedf tsdf def dint 1 (defrost) dint 2 defe (defrost) dint 3 (NO def.) dint time Examples: defrosting 1 ends due to reaching of temperature tedf, defrosting 2 ends at the end of the defe time as the temperature tedf is not reached, defrosting 3 does not take place as the temperature is higher than tsdf. At the end of defrosting, it is possible to delay the new start up of the compressor (output Out ) at the time set in parameter tdco to allow the evaporator to drain. During this delay, the led Def flashes to indicate the draining state. It is also possible to prevent start up of the compressor near to defrosting, to avoid waste of energy. If inside the time set in the parameter COFd (counted in advance compared to the start up of automatic defrosting both at intervals and by clock), an activation request for the output Out should take place, this does not take place and it is signalled by the flashing of the Out led. If one wishes to set a defrosting cycle every time the instrument is switched on (as long as the conditions set in the parameters tsdf and "tefe" apply) programme the parameter SdEF = yes. This allows the evaporator to be permanently defrosted, even when frequent interruptions to power supply occur that may cause the cancellation of the various defrosting cycles. During the defrosting, it may occur that the temperature measured by the cell probe () increases excessively (this obviously depends on the position of the probe compared to the evaporator). In the event that one does not wish this increase to be visualised by the instrument, it is possible to use the functions in the parameter dlo (Block display during defrosting) and Etdu (Differential unblocking of display after defrosting). The parameter dlo = On allows the temperature visualisation to be blocked on the last reading during a whole defrosting cycle and until the temperature does not return under the value [ SP + Etdu ] after defrosting has finished (or the time set in the parameter "dald" contained in the block ] AL ). With dlo = Lb, this allows visualisation of the writing def during defrosting and at the end of defrosting the writing PdEF up to when the temperature does not return below the value [ SP + Etdu ] (or the time set on the parameter "dald" contained in the block ] AL ). Alternatively with the dlo =, during defrosting, the instrument will continue to visualise the temperature measured by the probe. Note that during defrosting, the temperature alarms are disabled during the whole cycle and also afterwards for the time set in the parameter dald (see par. 4.9). 4.7 - MANUAL DEFROST To start up a manual defrosting cycle, press the key UP/DEFROST when it is not in programming mode and keep it pressed for about 5 seconds after which, if the conditions are correct, the led DEF will light up and the instrument will carry out a defrosting cycle. The start up or switch commands of a defrosting cycle can also be given by the digital input that are correctly programmed (see par. 4.10). 4.8 - EVAPORATOR FANS CTROL All the parameters concerning fan control are contained in the group ] FAn. The control of the fans on the output configured as FAn depending on determined control statuses of the instrument and the temperature measured by the probe Pr2. In the case that the probe Pr2 is not used (parameter Pr 2 = ) or in error (E2 o -E2), the output FAN is activated only depending on the parameters FCOF and FEdF. The parameter FCOF decides whether the fans must always be switched on independently of the compressor status ( FCOF =On) or be switched together with the compressor ( FCOF =). The parameter FEdF instead decides whether the fans must always be switched on independently of the defrosting status ( FEdF =On) or switched during defrosting ( FEdF =). In this latter case, it is possible to delay the start up of the fans even after the end of the defrosting of the time set in the parameter Fd. TECNOLOGIC - TLY27 - OPERATING INSTRUCTIS - Vr. 01 - ISTR 06656 - PAG. 5

Temp. Pr2 FLt Fct FAn When the probe Pr2 is used (par. Pr 2 = on) the fans, as well as being conditioned by the parameters FCOF and FEdF, are also conditioned by the temperature control. It is possible to set the disablement of the fans when the temperature measured by the probe Pr2 is higher than the one set in the parameter FLt (temperature too hot) or when it is lower than the one set in the parameter Fct (temperature too cold). The relative differential that can be set in parameter df is also associated with these parameters. 4.9 - ALARM FUNCTIS All the parameters concerning the alarm functions are contained in group ] AL. The alarm functions of the instrument work on the internal buzzer, if present and configured via the parameter buf, and on the output desired, if configured by the parameters O1F or O2F, depending on what is set on the said parameters. The possible selections of these parameters for the alarm signalling function are: = ALt - when one wants the buzzer or output to be activated in alarm and can be disabled (alarm silencing) manually by pressing any key of the instrument (typical application for sound signal). = AL - when one wants the buzzer or output to be activated in alarm status but cannot be disabled manually and are therefore only disabled when the alarm status ceases (typical application for a light signal). = ALL - when one wants the buzzer or output to be activated in alarm status and that they remain activated even when the alarm has ceased (see par.4.9.4) Disablement (recognition of memorised alarm) can only be carried out manually by pressing any key when the alarm has ended (typical application for light signal). = -ALt - when one wants the function described as ALt but with an inverse function (buzzer or output activated in normal condition and disabled in alarm status). = -AL - when one wants the function described as AL but with inverse logic (buzzer or output activated in normal conditions and disabled in alarm status). = -ALL - when one wants the function described as ALL but with inverse working logic (buzzer or output activated in normal conditions and disabled in alarm status). When no alarms are present, the green LED OK is lit. Any active alarm is shown on the instrument display with the lighting up of the AL led and the switching of the led OK. Any silenced or memorised alarm status is shown by the AL led flashing. The alarm conditions of the instrument are: - Probe errors E1, -E1, E2, -E2 - temperature alarms HI and LO - External alarms AL - Open door alarm AP 4.9.1 - TEMPERATURE ALARMS The temperature alarms work according to the probe measurements, the type of alarm set in the parameter Aty the alarm thresholds set in parameters HAL (maximum alarm) and LAL (minimum alarm) and the relative differential dal. Through the parameter Aty it is possible to set the alarm thresholds HAL and LAL which must be considered as absolute ( Aty =Ab) or relative to the active Set Point ( Aty =de). Using some parameters it is also possible to delay the enablement and the intervention of these alarms. df df tim e These parameters are: PAL - is the temperature alarm exclusion time on switching on the instrument if the instrument is in alarm status when it is switched on. dald - is the temperature alarm exclusion time at the end of defrosting (and, if programmed, at the end of draining) "dalc" - is the temperature alarm exclusion time at the end of a continuous cycle. ALd - is the temperature alarm delay activation time The temperature alarm is enabled at the end of exclusion time and is enabled after the ALd time when the temperature measured by the probe exceeds or goes below the respective maximum and minimum alarm thresholds. The alarm thresholds will be the same as those set on the parameters HAL and LAL if the alarms are absolute ( Aty =Ab) Temp. HAL LAL AL HI or will be the values [ SP + HAL ] and [ SP - LAL ] if the alarms are relative ( Aty =de). Temp. SP HAL LAL AL HI The maximum and minimum temperature alarms can be disabled by setting the relative parameters "HAL" and "LAL" =. At the same time as the signalling of the configured alarm (buzzer and/or output), the instrument signals the alarm by turning on the led light AL, switching the LED OK, turning on the led - in case of minimum alarm or the led + for maximum alarm, and visualises on the display: - Alternately HI and the set variable in parameter disp for maximum alarm - Alternately LO and the set variable in parameter disp for the minimum alarm 4.9.2 - EXTERNAL ALARM The instrument can signal an external alarm by activating the digital input with the function programmed as dif = 4 or 9 (see par. 4.10). At the same time as the signalling of the configured alarm (buzzer and/or output), the instrument signals the alarm by turning on the led AL, turning the led OK and visualising AL and the variable set in parameter disp alternately on the display. 4.9.3 - OPEN DOOR ALARM The instrument can signal an open door alarm by activating the digital input with the function programmed as din = 5 or 6 (see par. 4.10). When the digital input is activated and after the delay programmed in parameter oad, the instrument signals the alarm via the activation of the configured devices (buzzer and/or output), the turning on of the led AL, the turning of the led OK and AP and the variable set in parameter disp are visualised alternately on the display. 4.9.4 - ALARM MEMORY The instrument ers the possibility of arranging the alarm memory TECNOLOGIC - TLY27 - OPERATING INSTRUCTIS - Vr. 01 - ISTR 06656 - PAG. 6 LO LO dal dal tim e dal dal tim e

function via the parameter tal. If "tal" = no, the instrument cancels the alarm signal when the alarm status ends, if instead it is programmed as "yes", the led AL flashes even when the alarm status has ended to indicate that there has been an alarm. If the memorised alarm is for temperature, it also keeps the led - flashing to show a minimum alarm and + to show a maximum alarm. To cancel the alarm memory signal, press any key. It must be remembered that if an output function is desired (or the buzzer) with an alarm memory (=ALL or =-ALL) it is necessary to set the parameter tal = yes. 4.10 - DIGITAL INPUT All the parameters concerning the digital input functions are contained in the group ] din. The digital input present on the instrument accepts contacts free of voltage, the function carried out is defined by the parameter dif and the action can be delayed for the time set in parameter did. The parameter dif can be configured for the following functions: = 0 - Digital input not active = 1 - defrosting commencement command with contact normally open: on closing the input (and after the did time) a defrosting cycle is activated. = 2 - defrosting end command with contact normally open: on closing the input (and after the did time) a defrosting cycle is ended if in progress or defrosting is inhibited. = 3 - continuous cycle activation command with contact normally open: on closing the input (and after the did time) a continuous cycle is started up as described in the paragraph on the continuous cycle function. = 4 - External alarm signal with contact normally open: on closing the input (and after the did time) the alarm is activated and the instrument visualises AL and the variable set in parameter disp alternately on the display. = 5 -Cell door opening with fan block with contact normally open: on closing the input (and after the did time) the fans are stopped and the instrument visualises AP and the variable set in parameter disp alternately on the display. With this function mode, the action of the digital input also activates the time that can be set in parameter "oad" after which the alarm is activated to signal that the door has been left open. = 6 - Cell door opening with compressor and fan block with contact normally open: similar to dif = 5 but with fan and compressor block. = 7 - Remote control of auxiliary output AUX with contact normally open: on closing the input (and after the did time) the auxiliary output is activated as described in the "FOA" = 2 function mode of the auxiliary output. = 8 - Selecting the active set point with contact normally open: on closing the input (and after the did time) the temperature regulation set point SP 2 is activated. When instead the input is open the set point SP 1 is active (see selecting active set point) = 9 - Signalling of external alarm with disablement of all the control outputs with contact normally open: on closing the input (and after the did time) all the control outputs are disabled, the alarm is activated and the instrument visualises AL and the variable set in parameter disp alternately on the display. = 10 - Switching on/switching (Stand-by) of instrument with contact normally open: on closing the input (and after the did time) the instrument is switched on while it is placed in Stand-by when opened. = -1 - defrosting commencement command with contact normally closed : similar to dif =1 but with function logic reversed. = -2 - defrosting end command with contact normally closed : similar to dif =2 but with function logic reversed. = -3 - continuous cycle start-up command with contact normally closed : similar to dif =3 but with function logic reversed. = -4 - External alarm signal with contact normally closed : similar to dif =4 but with function logic reversed. = -5 - Cell door opening with fan block with contact normally closed : similar to dif =5 but with function logic reversed = -6 - Cell door opening with compressor and fan block with contact normally closed : similar to dif =6 but with function logic reversed. = -7 - Remote control of auxiliary output AUX with contact normally closed : similar to dif =7 but with function logic reversed. = -8 - Selecting the active set point with contact normally closed : similar to dif =8 but with function logic reversed. = -9 - Signalling of external alarm with disablement of all the outputs with contact normally closed : similar to dif =9 but with function logic reversed = -10 - Switching on/ (Stand-by) of instrument: similar to dif =10 but with function logic reversed. 4.11 - AUXILIARY OUTPUT All the parameters concerning the auxiliary output functions are contained in the group ] AuS. The auxiliary outpurt can be configured to operate on any of the outputs by programming the parameter of the desired output = AuS. The function carried out is defined by the parameter FOA and the function is conditioned by the time set in parameter tua. The parameter FOA can be configured for the following functions: = 0 - Auxiliary output not active = 1 - Regulation output delayed with contact normally open: the auxiliary output is activated with delay that can be set on the parameter "tua" compared to the output configured as Out. The output is then turned at the same time as the OUT output is disabled. This function mode can be used as a command for a second compressor or for all other working utilities according to the same OUT output conditions, but which must be delayed after the start up of the compressor to avoid excess electricity absorption. = 2 - Activation by front key (U or DOWN/AUX) or by digital input with contact normally open: the output is activated by pressing the keys U or DOWN/AUX suitably configured ( USrb or Fbd = 1) or via activation of the digital input if suitably configured ( dif =7). These commands have a bi-stable function, Which means that when first pressed, the output key is activated while the second is disabled. In this mode, the AUX output can be turned automatically after a certain time that can be set on the parameter "tua". With "tua" = the output is activated and deactivated only manually, using the front key (U or DOWN/AUX) or via the digital input. Differently, the output, once activated, is turned automatically after the set time. This function can be used, for example, as a cell light command, for non-misting resistance or other utilities. 4.12 - FUNCTIING OF KEYS U AND DOWN/AUX Two of the instrument keys, in addition to their normal functions, can be configured to operate other commands. The U key function can be defined by the parameter USrb while the DOWN/AUX key function can be defined by the parameter Fbd both contained in the group ] PAn. Both the parameters have the same possibilities and can be configured for the following functions: = 0 - The key carries out no function. = 1 - Pressing the key for at least 1 second, it is possible to enable/disable the auxiliary output if configured ( FOA =2). = 2 - Pressing the key for at least 1 second, it is possible to enable/disable a continuous cycle (see continuous cycle function). = 3 - Pressing the key for at least 1 second, it is possible to select one of the 2 memorised set point in rotation. Once selection has been made, the display will flash the active set point code for about 1 sec. (SP 1or SP 2). = 4 - Pressing the key for at least 1 second, it is possible to switch the instrument from the status to Stand-by status and vice versa. 4.13 - ACCESSORIES The instrument is equipped with a connector that allows the connection of some accessories described as follow. 4.13.1 - PARAMETERS CFIGURATI BY KEY01 It is possible the transfer from and toward the instrument of the functioning parameters through the device TECNOLOGIC KEY01 with 5 poles connector. TECNOLOGIC - TLY27 - OPERATING INSTRUCTIS - Vr. 01 - ISTR 06656 - PAG. 7

This device it s mainly useable for the serial programming of the instruments which need to have the same parameters configuration or to keep a copy of the programming of an instrument and allow its rapid retransmission. To use the device KEY01 it s necessary that the device or instrument are being supplied. Instrument supplied and device not supplied SUPPLY TVR Y cable 10 m MAX. SUPPLY Instrument supplied from the device SUPPLY ADAPTER 12 VDC AC SUPPLY For additional info, please have a look at the KEY01 instruction manual. 4.13.2 - PARAMETERS CFIGURATI BY KEY02 The connector allows the configuration of the parameters by PC through the software TLYCF and the communication interface RS232/TTL TECNOLOGIC KEY02. For the configuration it is not necessary to supply the instrument because it is supplied by the interface RS232/TTL. This system it s mainly useable for the serial programming of the instruments which need to have the same parameters configuration or to keep a copy of the programming of an instrument and allow its rapid retransmission. COMPUTER AC SUPPLY RS232 SUPPLY ADAPTER KEY 02 SUPPLY 12 VDC Through the communication software "TLYCF" for Microsoft WINDOWS TM it is possible: - To configure all the parameters - To save and to load in files the configurations - To monitor the connected instrument WINDOWS TM is a trade mark of Microsoft Corporation For additional info, please have a look at the KEY02 instruction manual. 4.13.3 - TVRY REMOTE DISPLAY To the instrument it is possible to connect the remote display TECNOLOGIC TVR Y through the special cable that can have a maximum length of 10 m. The device TVR Y, directly supplied by the instrument, it allows to visualize the temperature measured by the probe through a 2 ½ digit display. TTL For additional info, please have a look at the TVR Y instruction manual. 4.13.4 - RS 485 SERIAL INTERFACE BY TLCNV The instrument can be connected by a special cable to the TEC- NOLOGIC TLCNV device (TTL/RS485 interface), by means of which it is possible to connect the regulator with a net to which other instruments (regulators of PLC) are connected, all depending typically on a personal computer used as plant supervisor. Using a personal computer it is possible to acquire all the function information and to program all the instrument s configuration parameters. The software protocol adopted for TLY 27 is a MODBUS RTU type, widely used in several PLC and supervision programs available on the market (TLY series protocol manual is available on request). TLCNV interface is directly supplied by the instrument. TLCNV TX/RX TTL 4 5 6 GND B A RS 485 TLCNV cable SUPPLY For additional info and to program instrument address, please have a look at the TLCNV instruction manual. 5 - PROGRAMMABLE PARAMETERS TABLE Here below is a description of all the parameters available on the instrument. Some of them may not be present, either due to the fact they depend on the type of instrument or because they are automatically disabled as unnecessary. Group ] SP (parameters relative to Set Point) Par. Description Range Def. Note 1 SPAt Active Set point 1 2 1 2 SP1 Set Point 1 SPLL SPHL 0.0 3 SP2 Set Point 2 SPLL SPHL 0.0 4 SPLL Minimum Set Point -58 SPHL -50.0 5 SPHL Maximum Set Point SPLL 302 100.0 Group ] InP (parameters relative to measuring inputs) Par. Descrizione Range Def. Note 6 SEnS Probes Type Ptc - ntc Ptc 7 OFS1 Probe (cell) Calibration -30 30 0.0 8 OFS2 Pr2 Probe (evaporator) -30 30 0.0 (1) Calibration 9 Pr 2 Pr2 Probe Presence On - On (1) (evaporator) 10 Unit Unit of measurement C - F C 11 dp Decimal point On - On 12 FiL Measurement filter 20.0 2.0 sec 13 disp Variable visualized normally on display: - - Pr2 - SP =Display = measurement probe TECNOLOGIC - TLY27 - OPERATING INSTRUCTIS - Vr. 01 - ISTR 06656 - PAG. 8

Pr2= measurement probe Pr2 SP= Active Set Point Group ] reg (parameters relative to temperature control) Par. Description Range Def. Note 14 HSEt Differential 0 30 2.0 15 tone Activation time output OUT for probe broken 99.59 16 tofe Deactivation time output OUT for probe broken 99.59 17 Func Function mode output OUT HEAt - CooL CooL 18 tcc Continuous cycle Time 99.59 hrs.min Group ] def (parameters relative to defrosting control) Par. Description Range Def. Note 19 dtyp Defrosting Type: EL = electrical in = hot gas/reverse cycle EL - in EL 20 dint Defrosting interval 99.59 hrs.min 6.00 21 defe Max. lenght of defrost cycle 0.01 99.59 30.00 22 tedf Defrost stop - 58 302 8.0 (1) temperature 23 tsdf Defrost enable - 58 302 2.0 (1) temperature 24 dct Defrosting intervals rt - ct - cs rt Counting mode: rt = real time ct = On OUT time cs = defrost every OUT 25 tdco Compressor delay after 99.59 defrost (drainage time) 26 SdEF Defrost at power on no - yes no 27 dlo Defrost display Lock = display free On - - Lb On= Lock on temperature before defrost Lb= Lock on label def (during defrosting) and PdEF (during post-defrosting) 28 Etdu Differential display 0 30 2.0 unlock after defrost 29 COFd Time compressor 99.59 before defrost Group ] FAn (parameters relative to evaporator fan control) Par. Description Range Def. Note 30 FCOF Fan status with On - On compressor 31 FEdF Fan status during On - defrost 32 FLt (1) High temperature fan - 58 302-50.0 33 Fct (1) Low temperature fan - 58 302-50.0 34 df (1) Differential fan control 0 30 2.0 35 Fd Fan delay after defrost 99.59 Group ] PrC (parameters relative to compressor protection and power on delay) Par. Description Range Def. Note 36 PSC Type of compressor 1-2 - 3 1 protection: 1= delay at switch on 2= delay after switch 3= delay between starts 37 PtC Compressor protection 99.59 time 38 LtC Minimum compressor 99.59 function time 39 od Delay at power on 99.59 Group ] AL (parameters relative to alarms) Par. Description Range 40 Aty Temperature alarms Ab - de Type: Ab = Absolute de =Relative to Set 41 HAL High temperature Alarm / - 58 threshold 302 42 LAL Low temperature Alarm / - 58 threshold 302 43 dal Temperature Alarms 0 30 Differential 44 ALd Temperature Alarms 99.59 delay 45 tal Alarm memory no - yes 46 PAL Temperature Alarms 99.59 delay at power on hrs.min 47 dald Temperature Alarms 99.59 delay and unlock hrs.min display delay after defrost 48 dalc Temperature alarms 99.59 delay after continuous hrs.min cycle 49 oad Alarm delay with open door 99.59 Group ] din (parameters relative to digital input) Par. Description Range 50 53 dif (2) tua Function and function logic of digital input: 0 = No function 1= Start defrost 2= End defrost 3= Continuous cycle 4= External alarm 5= Door open with fan block 6= Door open with fan and compressor block 7= Auxiliary output command 8= Selection of active Set Point 9= External alarm with deactivation of control outputs 10= Switch on/switch (Stand-by) Delay in acquiring digital input key or digital input. Time relative to auxiliary output -10 / -9 / -8 / -7 / -6 / -5 / -4 / -3 / -2 / -1 / 0 / 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 99.59 Def. Ab 2.0 no 2.00 1.00 Def. 0 51 did (2) 99.59 Group ] AuS (parameters relative to auxiliary output) Par. Description Range Def. 52 FOA Function mode auxiliary 0 / 1 / 2 0 output: 0= No Function 1= regulation output delayed 2= manual activation by Note Note Note TECNOLOGIC - TLY27 - OPERATING INSTRUCTIS - Vr. 01 - ISTR 06656 - PAG. 9

Group ] Out (parameters relative to configuration of outputs) Par. Description Range Def. Note 54 Out1 Configuration of output /Out/dEF/ Out function OUT1: FAn/AuS/ALt/ = No function AL/ALL/ -ALt/ Out= Temperature -AL/ -ALL 55 56 Out2 control (compressor) def= defrosting FAn= fans AuS= Auxiliary ALt= Silenceable alarm AL= Alarm not silenceable ALL= memorised alarm Configuration of output function OUT2: see Out1 buf Configuration function: see Out1 Buzzer /Out/dEF/ FAn/AuS/ALt/ AL/ALL/ -ALt/ -AL/ -ALL /Out/dEF/ FAn/AuS/ALt/ AL/ALL/ -ALt/ -AL/ -ALL def Group ] PAn (parameters relative to configuration of the keyboard) Par. Description Range Def. Note 57 Fbd Function mode key / 1 / 2 / 3 DOWN/AUX: / 4 = No function 1= Auxiliary output command 2= Continuous cycle command 3= Selection of active Set Point 4= Switch on/switch (Stand-by) 58 USrb Function mode key U: / 1 / 2 / 3 see Fbd / 4 59 PASS Access Password to 9999 parameter functions Notes: (1) : Only for instruments with input for Pr2 probe (2) : Only for instruments with digital input 6 - PROBLEMS, MAINTENANCE AND GUARANTEE 6.1 - SIGNALLING Error Signalling: Error E1 -E1 Reason The probe may be interrupted or in short circuit, or may measure a value outside the range allowed instrument and E2 The probe Pr2 may be check the probe -E2 interrupted or in short circuit, or may measure a value outside the range allowed works correctly EEPr Internal memory error Check and if necessary re-programme the parameters function. In Cell probe error status, the output OUT behaves as set by the parameters tone and tofe. Other Signalling: Message Reason od Delay in switching on in progress def Defrosting in progress with dlo =Lb PdEF Post-defrosting in progress with dlo =Lb CC Continuous cycle in progress HI Maximum temperature alarm in progress LO Minimum temperature alarm in progress ALt Action Check the correct connection of the probe with the AL AP Digital input alarm in progress Door open 6.2 - CLEANING We recommend cleaning of the instrument with a slightly wet cloth using water and not abrasive cleaners or solvents which may damage the instrument. 6.3 - GUARANTEE AND REPAIRS The instrument is under warranty against manufacturing flaws or faulty material, that are found within 12 months from delivery date. The guarantee is limited to repairs or to the replacement of the instrument. The eventual opening of the housing, the violation of the instrument or the improper use and installation of the product will bring about the immediate withdrawal of the warranty s effects. In the event of a faulty instrument, either within the period of warranty, or further to its expiry, please contact our sales department to obtain authorisation for sending the instrument to our company. The faulty product must be shipped to TECNOLOGIC with a detailed description of the faults found, without any fees or charge for Tecnologic, except in the event of alternative agreements. 7 - TECHNICAL DATA 7.1 - ELECTRICAL DATA Power supply: 12 VAC/VDC, 24 VAC/VDC, 100..240 VAC +/- 10% Frequency AC: 50/60 Hz Power consumption: 12 V:3 VA approx. ; 24...240 V: 4 VA approx. ; with TVRY or TLCNV: 5 VA approx. Input/s: 1/2 inputs for temperature probes: PTC (KTY 81-121, 990 Ω @ 25 C) or NTC (103AT-2, 10KΩ @ 25 C); 1 digital input for free voltage contacts as alternative to the Pr2 input Output/s: 2 relay outputs: OUT1 SPST-NO or SPDT (16A-AC1, 6A- AC3 250 VAC,1HP 250VAC, 1/2HP 125 VAC) and OUT2 SPDT (5A-AC1, 2A-AC3 250 VAC, 1/8HP 125-250 VAC). Electrical life for relay outputs: OUT1 SPST-NO: 100000 op. ; OUT1 SPDT: 50000 op. (om. VDE); OUT2 : 100000 op. 100000 operat. (VDE om.) Installation category: II Measurement category: I Protection class against electric shock: Class II for Front panel Insulation: Reinforced insulation between the low voltage part (supply H type and relay outputs) and front panel; Reinforced insulation between the low voltage section (supply type H and relay outputs) and the extra low voltage section (inputs); Reinforced between supply and relay outputs; No insulation between supply F type and inputs. 7.2 - MECHANICAL DATA Housing: Self-extinguishing plastic, UL 94 V0 Dimensions: 33 x 75 mm, depth 64 mm Weight: 115 g approx. Mounting: Flush in panel in 29 x 71 mm hole Connections: 2,5 mm 2 screw terminals block Degree of front panel protection : IP 65 mounted in panel with gasket Pollution situation: 2 Operating temperature: 0... 50 C Operating humidity: 30... 95 RH% without condensation Storage temperature: -10... +60 C 7.3 - MECHANICAL DIMENSIS, PANEL CUT-OUT AND MOUNTING [mm] 75 5 33 AL TLY 27 Out Def - OK + Fan Aux Aux 64 28 TECNOLOGIC - TLY27 - OPERATING INSTRUCTIS - Vr. 01 - ISTR 06656 - PAG. 10

min. 15 mm - = Not present 29 71 d : INTERNAL BUZZER B = Yes - = No min. 12 mm RECOMMENDED PANEL CUTOUT e : SECDARY INPUT D = Digital Input P = Pr2 Temperature probe ff : SPECIAL CODES g : SPECIAL VERSIS BRACKETS TYPE 2 86 74 34 BRACKET TYPE 1 TYPE 2 PANEL + GASKET MAX 12 mm MAX 29 mm TYPE 1 PANEL + GASKET 31 43 7.4 FUNCTIAL FEATURES Temperature Control: / mode Defrost control: interval cycles by Electric Heating or hot-gas / reverse cycle Measurement range: PTC: -50...150 C / -58... 302 F; NTC: -50...109 C / -58...228 F Display resolution: 1 or 0,1 Overall accuracy: +/- 0,5 % fs Sampling rate: 130 ms. Display: 4 Digit Red h 12 mm Compliance: ECC directive EMC 2004/108/CE (EN 61326), ECC directive LV 2006/95/CE (EN 61010-1) Approvals: C-UL (file n. E212227) 7.5 - INSTRUMENT ORDERING CODE TLY 27 a b c d e ff g a : POWER SUPPLY H = 100...240 VAC L = 24 VAC/VDC F = 12 VAC/VDC b : OUTPUT OUT1 S = Relay SPDT 16A-AC1 R = Relay SPST-NO 16A-AC1 c : OUTPUT OUT2 R = Relay TECNOLOGIC - TLY27 - OPERATING INSTRUCTIS - Vr. 01 - ISTR 06656 - PAG. 11

DIGITAL THERMOSTAT FOR GLYCOL COOLING UNITS FRT PANEL DESCRIPTI KEYS DESCRIPTI 1. Key : Used for setting the Set point and for programming the function parameters. 2. Key / Aux: Used for selecting the parameters and for decreasing the values to be set. 3. Key / : Used for selecting the parameters and for increasing the value to be set. Also used for activating manual defrost. 4. Key : Used for visualizing the read temperatures. Mod.Collaudo. Term. Elettr